An ERRCS (ERRCS) has become a required in-building network in many municipalities around the country. The requirements for such systems are typically outlined by an entity called the “Authority Having Jurisdiction” or AHJ.
An ERRCS looks much like an Over-the-Air Cellular DAS in some respects, it uses a donor antenna to receive the radio signals from the local first responder network – signals that operate on private frequencies. These signals are then re-amplified in the building at the required locations.
The actual system requirements will vary by municipality. This will mandate what frequencies need to operate inside the building and at what locations and strength. There will typically be system-testing requirements to get an initial permit and an annual maintenance contract required to ensure the system remains operational.
After contacting the AHJ, the next step in the process is usually a site survey to provide baseline readings of the signal strength at the property – assuming the property is in some stage of construction. This will allow for a preliminary evaluation of the possible need for an ERRCs so that horizontal and vertical cable paths and/or conduit can be identified and installed. Once the building’s outer skin is up, a second site survey will determine the necessity of the ERRCS and identify areas of the building that require a network of antennas.
Contact In-Building Wireless Solutions
This ERRCS process is timely and confusing and varies somewhat by jurisdiction. If you need help navigating the process, please reach out to IBWS. To view our website, click here.